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gnithitatzs utitt @ffice ALFRED J. GRAIN GER, OF WILMINGTUN, ILLINOIS.

Letters .Patent o. ',si'dated February 2G, 1867.

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-TO ALL WHOM IT MAY CONCERN:

Bc it known that I, ALFRED J. GRAINGER, ot' Wilmington, Will county,State of Illinois, have invented a new andimproved Tilt-Hammer; and I dohereby declare that the following is a full, clear, and exactdescription thereof, which will enable others skilled in the art tomalle and use the saine, reference being had to the accompanyingdrawing, forming part of this specification.

The drawing shows a side view of my improved tilt-hammer.

This invention relates to new and useful improvements in tilt-hammers;and the invention consists in driving the hammer by a connecting-rod,which takes hold of the power end ofthe helve7 and connects it with thecrank of the driving-shaft, and then providing the driving-shaft with aeounterbalance for balancing the weight of the haninierso as to give amore oven strain on the driving devices; and also in providing the helveof the hammer with a spring joint, so that the hammer may adjust itselfto any thickness ot' metal which is placed on the anvil, or terminateits hammering stroke at different depths of stroke, while the power endofthe helve has always the saine depth of stroke, as hereinafterexplained.

A, in the drawing, is the hammer; B is the helve, which is mounted on arock-sl1aft or fulcrum, c, in the ordinary manner, and which isconstructed in two parts, B B; and these parts are united by a hingejoint, I1; and a certain measure of stiffness is given to the helve atthe joint by a spring, d, which is riveted or bolted to B', and pressesupon part B, as shown. Ff is a crank-shaft, which 'drives the hammer bymeans of a connecting rod, g, which connects the crank f, of thedriving-shaft Ii', with the power end ot' the helvc B B. The sha-ttl hasa ily-wheel, H, and has, further, a counterbalance or weight, I,attached to one side, s o as to balance the weight of the hammer A. Thearm z', which projects from shaft I", and which carries theeountorbalanee I, has a screw-thread out on its outer end; and theweight I is screwed thereon, and may be screwed out'or in on the saidarm e', and nearer to or farther from the shaft F, and thereby thecounterbalance powers of the weight I made variable or adjustable. kshows the crank, to which the power is applied. By means ofthecounterbalance I the 'weight of the hammer is balanced on thedriving-shaft F, and the working of the parts is more smooth and freefrom shocks than heretofore; and, with a rigid connection, g', betweenthe driving-erankf and the helve B', the hammer may be driven with amuch greater velocity, and a hammerot' a given weight may he inode tostrike a heavier blow than when the hammer is left to fall by its ownweight, as ordinarily.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. I claim the connecting-rod g, crank-shaft F f, and counterbalance I,in Combination with thc hammer A B, substantially in the manner and forthe purpose set forth.

2. I claim the hammer A, springjointed` helve B B, connecting-rod g, andcrankshaft F f, substantially as and for the purpose described.

ALFRED J. GRAINGER..

Witnesses:

GEORGE STRATHDEE, JAMES L. YOUNG.

